Critical 9.8Published Oct 28, 2026

CVE-2026-118690Signal K Server before 2.33.0 Missing Authentication via /skServer/ziplogs

Updated under an hour ago (Oct 29, 2026, 2:00 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for signalk-server

Exploited in the last 30 days

Signal K Server before 2.33.0 contains a missing authentication vulnerability that allows unauthenticated remote attackers to download log archives via the /skServer/ziplogs endpoint. Attackers can extract the JWT secretKey from security.json in the ZIP, forge administrator tokens, and create persistent admin accounts for full server control.

CVSS: 9.8 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-306
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Received
Record last updated: Oct 28, 2026
First seen by InfoSec Signals: Oct 28, 2026

Affected products

Affected products

SignalK signalk-server signalk:server (from the name)	before 2.33.0; 2.33.0 not affected	CNA record

References

References

https://github.com/SignalK/signalk-server/commit/728bab82742d16c54e50525b95dc9b6e32396107	patch
https://github.com/SignalK/signalk-server	product
https://github.com/SignalK/signalk-server/security/advisories/GHSA-4w32-qx5g-cpwv	vendor-advisory
https://github.com/SignalK/signalk-server/blob/v2.32.0/src/interfaces/logfiles.js#L30-L91	technical-description
https://github.com/SignalK/signalk-server/releases/tag/v2.33.0	release-notes
https://www.vulncheck.com/advisories/signal-k-server-before-2.33.0-missing-authentication-via-skserver-ziplogs	third-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.